Here’s what more than 2,500 business decision-makers around the world say.Download the report
...with the Facility Hero app in hand! Discover how you can optimize your maintenance efforts today.Learn more
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
The arithmetic module only includes CEIL or FLOOR operations, no ROUND operation.
We can create one using an IF statement.
Let's say we want to round S1 to the closest integer. The function is:
How does it work?
Example: S1 = 12.7. The expected result for rounding is 13.
(CEIL(S1)+FLOOR(S1))/2 = 12.5
A test is done: if S1 is lower than (CEIL(S1)+FLOOR(S1))/2, it will return FLOOR(S1). If not, it returns CEIL(S1).
In the example, the test "12.7 < 12.5" is false, so the function returns CEIL(12.7)=13.
What happens in the 12.5 case?
The function is still correct. "<" means "strictly lower than".
So the test "12.5 < 12.5" is technically False, the function returns CEIL(12.5)=13, which is the expected result.
IF(S1<(CEIL(S1)+FLOOR(S1))/2,FLOOR(S1),CEIL(S1)) contains exactly 48 characters, which is the limit for the arithmetic module in the meters (limit is 249 in the VIP).
So rounding the S1-S8 inputs is OK, but rounding (S1+S2) or S1/1000 requires an additional arithmetic module.
Check the ION Reference for more details.
Last Revised: November 13, 2007
All content © 1992-2007 Schneider Electric